Model Comparison

Devstral Medium vs GPT-5

GPT-5 significantly outperforms across most benchmarks. Devstral Medium is 4.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Devstral Medium outperforms in 0 benchmarks, while GPT-5 is better at 1 benchmark (SWE-Bench Verified).

GPT-5 significantly outperforms across most benchmarks.

Mon May 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Devstral Medium costs less

For input processing, Devstral Medium ($0.40/1M tokens) is 3.1x cheaper than GPT-5 ($1.25/1M tokens).

For output processing, Devstral Medium ($2.00/1M tokens) is 5.0x cheaper than GPT-5 ($10.00/1M tokens).

In conclusion, GPT-5 is more expensive than Devstral Medium.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon May 25 2026 • llm-stats.com
Mistral AI
Devstral Medium
Input tokens$0.40
Output tokens$2.00
Best providerMistral
OpenAI
GPT-5
Input tokens$1.25
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5 accepts 400,000 input tokens compared to Devstral Medium's 128,000 tokens. Both models can generate responses up to 128,000 tokens.

Mistral AI
Devstral Medium
Input128,000 tokens
Output128,000 tokens
OpenAI
GPT-5
Input400,000 tokens
Output128,000 tokens
Mon May 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5 supports multimodal inputs, whereas Devstral Medium does not.

GPT-5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Devstral Medium

Text
Images
Audio
Video

GPT-5

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Devstral Medium

Proprietary

Closed source

GPT-5

Proprietary

Closed source

Release Timeline

When each model was launched

Devstral Medium was released on 2025-07-10, while GPT-5 was released on 2025-08-07.

GPT-5 is 1 month newer than Devstral Medium.

Devstral Medium

Jul 10, 2025

10 months ago

GPT-5

Aug 7, 2025

9 months ago

4w newer

Knowledge Cutoff

When training data ends

GPT-5 has a documented knowledge cutoff of 2024-09-30, while Devstral Medium's cutoff date is not specified.

We can confirm GPT-5's training data extends to 2024-09-30, but cannot make a direct comparison without Devstral Medium's cutoff date.

Devstral Medium

—

GPT-5

Sep 2024

Provider Availability

Devstral Medium is available from Mistral AI. GPT-5 is available from OpenAI.

Devstral Medium

mistral logo
Mistral
Input Price:Input: $0.40/1MOutput Price:Output: $2.00/1M

GPT-5

openai logo
OpenAI
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Mistral AI
Less expensive input tokens
Less expensive output tokens
OpenAI
Larger context window (400,000 tokens)
Supports multimodal inputs
Higher SWE-Bench Verified score (74.9% vs 61.6%)

Detailed Comparison

AI Model Comparison Table
Feature
Mistral AI
Devstral Medium
OpenAI
GPT-5

FAQ

Common questions about Devstral Medium vs GPT-5.

Which is better, Devstral Medium or GPT-5?

GPT-5 significantly outperforms across most benchmarks. Devstral Medium is made by Mistral AI and GPT-5 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Devstral Medium compare to GPT-5 in benchmarks?

Devstral Medium scores SWE-Bench Verified: 61.6%. GPT-5 scores SWE-Lancer (IC-Diamond subset): 100.0%, COLLIE: 99.0%, Tau2 Telecom: 96.7%, OpenAI-MRCR: 2 needle 128k: 95.2%, AIME 2025: 94.6%.

Is Devstral Medium cheaper than GPT-5?

Devstral Medium is 3.1x cheaper for input tokens. Devstral Medium costs $0.40/M input and $2.00/M output via mistral. GPT-5 costs $1.25/M input and $10.00/M output via openai.

What are the context window sizes for Devstral Medium and GPT-5?

Devstral Medium supports 128K tokens and GPT-5 supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Devstral Medium and GPT-5?

Key differences include context window (128K vs 400K), input pricing ($0.40 vs $1.25/M), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes Devstral Medium and GPT-5?

Devstral Medium is developed by Mistral AI and GPT-5 is developed by OpenAI.